Rotary workbench gear ring hydraulic clamping device

Abstract

The invention relates to a rotary workbench gear ring hydraulic clamping device. An end cover and a cylinder body form a hydraulic oil cavity; the rod body of a first piston rod is glidingly assembled in a first axle hole, the head of the first piston rod is positioned in the hydraulic oil cavity, and an upper oil cavity is formed between the head of the first piston rod and a cylinder cover; therod body of a second piston rod is glidingly assembled in a second axle hole, the head of the second piston rod is positioned in the hydraulic oil cavity, and a lower oil cavity is formed between thehead of the second piston rod and the bottom of the cylinder body; a butterfly spring is arranged between the head of the first piston rod and the head of the second piston rod and is in a compressedstate; the outer end of a first oil passage in the end cover is connected with a first oil pipe joint, and the inner end of the first oil passage is communicated with the upper oil cavity; the outer end of a second oil passage in the cylinder body is connected with a second oil pipe joint, and the inner end of the second oil passage is communicated with the lower oil cavity; and a first pressure plate is arranged at the end of the rod body of the first piston rod, and a second pressure plate is arranged at the end of the rod body of the second piston rod. The device is simple and compact in structure, and can ensure clamping and locking of a rotary workbench when a turning machining center carries out milling.

Description

technical field [0001] The invention relates to an accessory part on a rotary table, in particular to a hydraulic clamping device for a ring gear of a rotary table used when the rotary table needs precise positioning and indexing processing, and belongs to the technical field of mechanical structures. Background technique [0002] With the development of my country's machinery industry, especially the rapid development of my country's large-scale wind power generation equipment, large-scale hydropower equipment, large-scale metallurgical machinery, nuclear power nuclear energy and other technologies, there are more and more demands for high-precision processing and compound processing of large workpieces in the market , which puts forward higher requirements for processing equipment. The large-scale turning and milling machining center is a kind of large-scale numerical control equipment developed under the market demand. It can complete the turning and milling compound proc...

AI Technical Summary

Problems solved by technology

At present, some small turn-milling compound processing equipment in the market basically use the rotary drive motor to lock the rotary table tightly, which makes the rotary drive motor and the reduction transmission mechanism need to bear the impact load during milling; and the long-term The impact load will inevitably lead to the increase of the driving gap between the rotary drive motor and the deceleration transmission mechanism, resulting in the high-precision indexing processing of CNC equipment, the rotary table needs to enter the encoder signal feedback and system error compensation many times to complete The indexing action greatly affects the processing efficiency and processing accuracy

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